/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.cypher.internal.tracing;

import org.neo4j.cypher.internal.frontend.phases.CompilationPhaseTracer;

public interface CompilationTracer {
    QueryCompilationEvent compileQuery(String query);

    interface QueryCompilationEvent extends AutoCloseable, CompilationPhaseTracer {
        @Override
        void close();
    }

    CompilationTracer NO_COMPILATION_TRACING = new CompilationTracer() {
        @Override
        public QueryCompilationEvent compileQuery(String query) {
            return NONE_EVENT;
        }

        private final QueryCompilationEvent NONE_EVENT = new QueryCompilationEvent() {
            @Override
            public CompilationPhaseEvent beginPhase(CompilationPhase phase) {
                return NONE_PHASE;
            }

            @Override
            public void close() {}
        };
    };
}
